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What Happens to Low Mass Stars (< 8 solar masses)? STAGE 1: Main Sequence A star's life begins when nuclear reactions start deep in the core. Hydrogen nuclei are fused to form a helium nucleus. Each helium...more

STAGE 4: White Dwarf When the fuel is used up, there is nothing to hold the star's layers up against gravity and the star begins to collapse. Gravity squeezes the star down into a very small size. As...more

STAGE 5: Black Dwarf White dwarfs are some of the hottest objects in the known universe with temperatures ranging from 30,000 K to 200,000 K. They continue to radiate their immense internal energy into...more

Even though the sleeping man is no longer on the bed, you can still see where he was lying down. The heat from his body warmed up the bed sheets which are now radiating infrared light toward your eyes....more

All warm objects radiate in the infrared. The warmer the object, the higher the frequency and intensity of the radiation. Very hot objects give off other types of radiation in addition to infrared. Click...more